EFFECTS OF SOIL COMPACTION ON DEVELOPMENT AND YIELD OF CORN (MAIZE)
EFFECTS OF SOIL COMPACTION ON DEVELOPMENT AND YIELD OF CORN (MAIZE)
复制标题
土壤压实对玉米发育和产量的影响
DOI：
10.4141/cjps78-066
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
H. Le
中科院分区：
文献类型：
--
作者：
G. Raghavan;E. Mckyes;G. Gendron;B. Borglum;H. Le
1976 年生长季节，在 Ste. 进行了 100 个小区的试验。 Rosalie 粘土，采用随机完整区块设计，在四个区块中的每一个区块内进行 25 次机械交通处理。使用三辆车辆接触压力、四次拖拉机通过、播种组之前或之后以及零交通控制来将生长和产量变量与车轮交通和由此产生的土壤压实联系起来。随着机械运输量的增加，植物出苗和抽雄被推迟。从播种后第 29 天、44 天、60 天、74 天和 88 天监测到的植物生长速率因地块而异。根据接触压力和车辆通过次数的乘积推导出赛季不同时间的生长模型。在交通量较大的地块中，植物和穗的水分含量较高。产量、穗产量和籽粒产量均随着机器接触压力和道次的增加而下降。在某些情况下，产量下降超过 50%，...
A 100-plot experiment was performed during the growing season of 1976 in a Ste. Rosalie clay soil, using a randomized complete-block design with 25 treatments of machinery traffic within each of four blocks. Three vehicle contact pressures, four numbers of tractor passes, before or after seeding groups and a control of zero traffic were used to relate the growth and yield variables to wheel traffic and resulting soil compaction. Plant emergence and tasselling were delayed with increasing machinery traffic. The plant growth rate monitored at 29, 44, 60, 74 and 88 days from the seeding time was dramatically different from plot to plot. Growth models at different times of the season were derived in terms of the product of contact pressure and number of passes of the vehicle. Plant and ear moisture contents were higher in plots with heavier traffic treatment. Yield, ear yield and grain yield all decreased with increases in machine contact pressure and passes. The reduction in yield was over 50% in some cases,...